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发明名称
Improvements in or relating to the production of hard alloys
摘要
申请公布号
GB499763(A)
申请公布日期
1939.01.27
申请号
GB19370020790
申请日期
1937.07.27
申请人
CHARLES ALFRED BOLTON
发明人
分类号
C22C1/05
主分类号
C22C1/05
代理机构
代理人
主权项
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